Mainly Neat Stuff --> Vintage Macintosh --> Vintage Radius Documents
This is a reconstruction of original Radius support documentation. All links on this page are now defunct. For more information, refer to the document Vintage Radius Documents.
A: The original PrecisionColor 8/1600 (model 0529) does not support sync on green monitors, while the 8/1600 version 2 (model 0552) does. This means that if your monitor only has three bnc connections (red, green, blue) it will not work directly off of the original 8/1600 card. The original 8/1600 card had slots available for adding 2 Mb of VRAM and the 8/1600 version 2 does not.
A: The 24/1600 card has 4Mb of VRAM on the card, and the 8/1600 v2 has 2 Mb of VRAM. The 8/1600 will allow 24-bit color up to a resolution of 832x624, and 8-bit color beyond that up to 1920x1080. The 24/1600 will allow 24-bit color up to 1152x870 and 16-bit color beyond that up to 1920 x 1080.
A: No, these cards do not support hardware pan and zoom capability.
A: Radius has developed a FlashROM upgrade for the PrecisionColor 8/1600 v2 and the PrecisionColor 24/1600 that resolves this problem. The file is available at the following locations:
Keyword: Radius --> Software Library --> "PrecisionColor PCI FlashROM"
You can also have the FlashROM upgrade mailed to you by calling 800-375-9256.
The instructions for running the FlashROM update are as follows:
A: Check to see if the monitor you are using has a serial number beginning with a "D". If not, you will need to call 800-375-9256 for a possible solution to this sync issue.
A: Radius is aware of this issue, but we do not have a solution currently.
A: Make sure that the Precision card is in one of the bottom four slots of the SuperMac compatible.
A: The measures for built-in-video are often based upon 8-bit graphic performance and often at only 640x480, or 14" resolution. On the other hand, the Radius cards are being measured for 24-bit graphic performance. The difference in the number of calculations, and hence time, a CPU must make between 8-bit color depth and 24 -bit color depth is astronomical. Therefore, this is an unfair comparison. What you are experiencing is indeed 24-bit accelerated graphics, which may or may not be faster than 8-bit built-in-video, depending on the card and CPU in question, but it certainly produces a significantly better picture. If photo realism and graphic beauty are not important to your work, you may wish to drop down to the 8-bit level of 256 colors for potentially increased speed. The true value of any graphics card is its ability to generate and accelerate 24-bit images.
A: These cards will not accelerate any of the PhotoShop plug-in filters, since the cards were designed to accelerate Apple's QuickDraw routines. However, you should see an increase in QuickDraw functions used within Photoshop - such as screen redraw, and scrolling. PhotoShop is a very memory-intensive application, and enough dynamic RAM hasn't been allocated to the application for a document to reside totally within RAM, PhotoShop will search for "scratch disk" to use. This is similar to using "virtual memory," and is inherently slower than using dynamic RAM. A good rule of thumb is to give Adobe PhotoShop four times more memory than the document you are working on. Therefore, if you are working within a PhotoShop document which is 10 megabytes in size, you should assign 40 megabytes to the PhotoShop application.
To assign additional memory to any Macintosh application:
A: Your 19-inch display is either a Radius Color Display 19 (model 0031), also known as the GDM-1950, as it is designated on the back. If so, these unwanted purple lines are the result of the display and cable not syncing properly due to the collision of old and new technology. You can relieve this problem, by dialing 800-375-9256 or 800-977-7060 and ordering part number 590-0058-02. This cable will allow the card to properly sense the RCD19 display.
A: Yes, but only in the display's native orientation - landscape mode for the PrecisionColor Pivot Display (model #0356), and portrait mode for the fixed frequency Color Pivot Display (model #0277). The PrecisionColor cards do not include the circuitry which allows pivoting. As a result, you can get 24-bit video on either of the displays, but only in one screen orientation. Radius does not make a PCI card which will allow pivoting.
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